الفهرس 
NORMAL ANATOMY OF RELEVANT NON-CNS FETAL ANOMALIES.Only 14 pages are availabe for public view
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Abstract
T
he recent popularity of prenatal magnetic resonance (MR) imaging has been associated with the development of ultrafast MR imaging techniques such as the single-shot fast spin-echo sequence.
MR imaging can demonstrate non-CNS fetal anatomy and pathologic conditions clearly. With its excellent tissue contrast, MR imaging provides information that supplements information provided by ultrasonography (US), especially in cases of neck, chest, and gastrointestinal lesions. Because of its large field of view, MR imaging allows evaluation of the relationship between a large lesion and adjacent structures. MR imaging should be considered if the diagnosis of a suspected non-CNS lesion is unclear at fetal US, as it plays an important complementary role to US in such cases and will be further accepted for fetal imaging in the future.
Fetal chest lesions, including congenital cystic adenomatoid malformation, brochopulmonary sequestration, fetal hydrothorax, mediastinal masses, pulmonary hypoplasia and congenital diaphragmatic hernia, MRI has been shown to be more accurate than sonography in evaluation of such lesions. Normal lung development at different gestation is also estimated by MRI more accurately than sonography.
In fetal abdomen, MRI provides complete visualization of fetal GIT helping in diagnosis of fetal GIT lesions such as cloacal malformation, intestinal atresia, GI cystic lesions, anorectal malformations, renal pathology and meconium cysts